Raise your hand if you're totally jealous of Maci Bookout's bangin' bod. You're not alone! Teen Mom's resident redhead has one of the best figures we've ever seen  — it's almost hard to believe she popped out baby Bentley just four years ago!

So how does the 21-year-old stay so fit? Believe it or not, a super-fast metabolism mixed with good genes.  

In fact, Maci's metabolism is so fast, she has trouble keeping weight on! We know, we know, it sounds totally unfair, but girlfriend is a bit self-conscious about her waif-thin physique.

"I'm on a gain weight workout and diet!" she said to a fan back in Sept. "I'm always doin stuff backwards lol."

We think Maci looks gorgeous no matter what, but there's no harm in hitting the gym. Get your fitness on, girl!

What do you think of Maci's figure? Is she too skinny or just right? Tell us below!


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